Ichthyol: Its History, Properties, and Therapeutics:

From the Introductory. Ichthyol, an organic sulfur preparation, was first brought into commerce in 1882 by Rudolf Schroter, the founder of the Ichthyol Company of Hamburg, under the trade-marked name "Ichthyol," and "Sulpho-Ichthyolicum" or "Sulpho-Ichthyolate." As a remedy, the preparation was originally introduced in skin diseases by the eminent dermatologist. Dr. P. G. Unna, of Hamburg, in 1882. Since then, however, its application has been widely extended, and today there is no remedy m...